Here you can find a list of the implemented user facing features at the moment. For more information about the technical features visit next chapter Architecture.
Two step loading (really fast + full)
First visit to an article will show a summarized version to get useful content to users with bad connections as fast as possible.
The loading strategy (right now opt-in by the user by clicking on read more) needs to be discussed as different strategies have different trade-offs.
Lazy loading images
Images are lazy loaded when they are closed to the viewport. This way we avoid blocking rendering and getting the important assets of the site and save on bandwidth usage of the user and the wikimedia servers.
Client side navigation
Navigation happens on the client on enabled browsers, meaning you never see a blank page and perceived speed is greater.
The loading experience will be improved in different ways, for example pre-fetching link summaries for the current article, using better loading animations, etc.
Client side caching of content (articles)
When the user visits articles, the content is cached on the client browser, so when the user goes back to it, either on the same sesion or on a different one, the loading of the content will be instant since it will already be on their device.
Offline access and full caching of the site's shell
The application is fully cached in the client when visited for the first time, informing the user it is ready for working offline.
After that point, the website is cached, this means it will work fine without internet, but also that subsequent visits to the site will show the site's chrome instantly. The article content will be instant too if it was visited previously, same thing as the images (which are also cached on the client).
The perception of speed is greatly improved after the first visit.
In the user facing features camp there is reference tooltips, media gallery, section collapsing, language selector, etc.
There's also a lot to think about what to load automatically and what to load when the user requests it.
We'll get to it step by step, ping us in the issues with any comments you have.